TYREDOG TD-4100A-X - Manual (Page 13)

V1.01-FJ04 (1105068)
13
The installation of tire pressure sensors
As sensor has its own position, you have to make sure its defined
position. When inserting batteries in every sensors please don’t
mix up sensor caps. Sensor map could give guidance for user to
install.
Sensor map
Number 1 means front tire.
Number 2 means rear tire.
Insert batteries in sensors：
Battery installation for tire pressure sensor
A. Take away sensor cap in anti-clockwise direction.